Section 2 Turbidity Measurement; Operating Controls And Indicators; Filter Modules; Installing The Filter Assembly - Hach 2100N Instruction Manual

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SECTION 2

2.1 Operating Controls and Indicators

2.2 Filter Modules

2.2.1 Installing the Filter Assembly

Figure 3 Inserting the Filter Assembly Into the Housing
* U.S. Patent D365682
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TURBIDITY MEASUREMENT
2100N Laboratory Turbidimeter controls and indicators are explained in detail in
SECTION 3. Also, refer to the operating features in Figure 8 on page 33.
Close the cell cover and press the
power on. Dark detector readings are taken immediately after the instrument is
switched on; error code
ERR07
during power up.
The 2100N Turbidimeter is supplied with an insertable EPA Filter Assembly*
(Cat. No. 30312-00) for turbidity measurement.
The EPA Filter Assembly is required for turbidity measurements reported for
United States Environmental Protection Agency (USEPA) National Primary
Drinking Water Regulations (NPDWR) or National Pollutant Discharge
Elimination System (NPDES) permits.
1. Ensure the filter is clean and free from visible damage.
Note: Handle the filter assembly with care; the filter installed in the assembly is fragile.
Periodically inspect the filter glass for scratches or other signs of degradation. If the
filter appears cloudy or dirty, clean it with lens tissue.
2. Hold the tab on the filter assembly, and insert the filter with the arrows
pointing toward the front of the turbidimeter.
3. Press the filter assembly all the way down into the housing. (See Figure 3.)
4. To remove the filter assembly from the instrument, grasp the tab and pull
straight up. Store the filter assembly in a clean environment.
19
switch on the back instrument panel to turn
I/O
may be displayed if the cell cover is left open